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US 11,960,221 B2Granted
Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsRyosuke Tsuruga, Yutaka Kakehi, Tatsuya Kohno, Manato Kobayashi
Life of this patent
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Abstract
An image forming apparatus includes an image forming portion, a belt, a plurality of stretching rollers including an inner roller and an upstream roller, an outer member, an urging member, a first position changing mechanism, a storing portion, a controller, and an operating portion. The controller controls the first position changing mechanism on the basis of a kind of a recording material on which an image is formed, first set information stored in the storing portion, and first input information for changing setting of a position of the urging member inputted to the controller through the operating portion.
Claims29
An image forming apparatus comprising:
- an image forming portion configured to form a toner image on an image bearing member;
- a belt onto which the toner image is transferred from the image bearing member;
- a plurality of stretching rollers including an inner roller contacting an inner peripheral surface of said belt and an upstream roller provided upstream of and adjacent to said inner roller with respect to a rotational direction of said belt, said stretching rollers being configured to stretch said belt;
- an outer member configured to form a transfer nip, where the toner image is transferred from said belt onto a recording material, in cooperation with said inner roller, said outer member being in contact with an outer peripheral surface of said belt;
- an urging member provided downstream of said upstream roller and upstream of said inner roller with respect to the rotational direction of said belt and capable of urging the inner peripheral surface of said belt;
- a position changing mechanism configured to change a position of said urging member;
- a storing portion configured to store setting information for setting a position of said urging member corresponding to a kind of a recording material;
- a controller configured to control said position changing mechanism on the basis of the kind of the recording material on which the image is formed and the setting information stored in said storing portion;
- and
- an operating portion configured to allow manual input of an instruction to change the position of said urging member corresponding to a predetermined recording material.
7 more elements
An image forming apparatus comprising:
- an image forming portion configured to form a toner image on an image bearing member;
- a belt onto which the toner image is transferred from the image bearing member;
- a plurality of stretching rollers including an inner roller contacting an inner peripheral surface of said belt, said stretching rollers being configured to stretch said belt;
- an outer member configured to form a transfer nip, where the toner image is transferred from said belt onto a recording material, in cooperation with said inner roller, said outer member being in contact with an outer peripheral surface of said belt;
- a position changing mechanism configured to change a position of the transfer nip with respect to a circumferential direction of said inner roller by moving said inner roller;
- a storing portion configured to store setting information for setting a position of said inner roller corresponding to a kind of a recording material;
- a controller configured to control said position changing mechanism on the basis of the kind of the recording material on which the image is formed and the setting information stored in said storing portion;
- and
- an operating portion configured to allow manual input of an instruction to change the position of said inner roller corresponding to the predetermined recording material.
6 more elements
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- a transfer member configured to form a transfer portion between said transfer member and said image bearing member, the toner image being transferred from said image bearing member at the transfer portion;
- a position changing mechanism configured to change a position of the transfer portion with respect to a circumferential direction of said image bearing member by moving said transfer member;
- a receiving portion configured to receive information on a kind of a recording material on which an image is formed;
- a controller configured to control an image forming operation based on the information;
- and
- an operating portion configured to allow manual input of an instruction,
- wherein said controller is configured to be capable of selectively executing the image forming operation in a first mode and a second mode,
- in the first mode, the position of the transfer portion with respect to the circumferential direction of said image bearing member being changed to any one of a plurality of positions including a first position and a second position based on the information received by said receiving portion, and
- in the second mode, the position of the transfer portion with respect to the circumferential direction of said image bearing member being changed to any one of the plurality of positions including the first position and the second position based on the instruction manually inputted through said operating portion regardless of the information received by said receiving portion.
7 more elements
An image forming apparatus comprising:
- an image bearing member configured to bear a toner image;
- a transfer member configured to form a transfer portion between said transfer member and said image bearing member, the toner image being transferred from said image bearing member at the transfer portion;
- a position changing mechanism configured to change a position of the transfer portion with respect to a circumferential direction of said image bearing member by moving said transfer member;
- a receiving portion configured to receive information on a kind of a recording material on which an image is formed;
- a controller configured to control an image forming operation based on the information received by said receiving portion;
- and
- an operating portion configured to allow manual input of an instruction,
- wherein said controller is configured to be capable of selectively executing the image forming operation in a first mode and a second mode,
- in the first mode, the position of the transfer portion with respect to the circumferential direction of said image bearing member being changed to any one of a plurality of positions including a first position and a second position based on the information received by said receiving portion, and
- in the second mode, the position of the transfer portion with respect to the circumferential direction of said image bearing member being changed to a position based on the instruction manually inputted through said operating portion regardless of the information received by said receiving portion.
7 more elements
An image forming apparatus comprising:
- an image forming portion configured to form a toner image on an image bearing member;
- a belt onto which the toner image is transferred from the image bearing member;
- a transfer member configured to form a transfer portion and configured to transfer the toner image from said belt to a recording material at the transfer portion;
- a position changing mechanism configured to change a position of the transfer portion with respect to a circumferential direction of said belt by moving said transfer member;
- a receiving portion configured to receive information on a kind of the recording material on which an image is formed;
- a controller configured to control an image forming operation based on the information received by said receiving portion;
- and
- an operating portion configured to allow manual input of an instruction,
- wherein said controller is configured to be capable of selectively executing the image forming operation in a first mode and a second mode,
- in the first mode, the position of the transfer portion with respect to the circumferential direction of said belt being changed to any one of a plurality of positions including a first position and a second position based on the information received by said receiving portion, and
- in the second mode, the position of the transfer portion with respect to the circumferential direction of said belt being changed based on the instruction manually inputted through said operating portion regardless of the information received by said receiving portion.
8 more elements
Dependencies are inferred from the claim text.